Examples of high performance cache systems (Memcached)

in memcached, entity types are not serializable in memcached, so the entity classes need to be processed before they can be cached.

Memcached is a high-performance distributed memory object caching system for dynamic Web applications to mitigate database load. It improves the speed of dynamic, database-driven Web sites by caching data and objects in memory to reduce the number of times a database is read. Memcached is based on a hashmap that stores key/value pairs. Its daemon (daemon) is written in C, but the client can write in any language and communicate with the daemon through the memcached protocol.

We can use memcached to cache types such as String types that have internally implemented serialization, but for our custom types we cannot cache them in memcached because memcached can only cache data after serialization, so Here we will serialize the custom entity type and store it in memcached.

First download the memcached under Windows platform and install it. After the installation is started memcached service, you can use the DOS command under CMD input, you can also be in the Computer Management, service->memcached-> start. To start the service.

This is followed by the introduction of the associated DLL in the project:
Commons.dll,icsharpcode.sharpziplib.dll,log4net.dll,memcached.clientlibrary.dll
Introduction of Memcached.ClientLibrary.dll in project references

Then you write the program, where you create an MVC program:
Create a class in the Models folder:

[Serializable]public class Vip{public string UserName {get; set;} public int? Vip {get; set;} Public DateTime? vipenddate {get; set;} public string Mail {get; set;} public string QQ {get; set;}}

If the label is not serializable, then the subsequent run program will error.

A Memcachedhelper class is then created to aid programming.

public class Memcachedhelper{public static memcachedclient mclient;static memcachedhelper () {string[] serverlist = new String[] {"127.0.0.1:11211"}; Sockiopool pool = sockiopool.getinstance ("First");p ool. Setservers (serverlist);p ool. Initialize (); mclient = new Memcachedclient (); mclient. poolname = "First"; mclient. EnableCompression = false;} public static bool Set (string key, object value, DateTime expiry) {return mclient. Set (key, value, expiry);} public static object Get (string key) {return mclient. Get (key);}}

The final is the controller inside the specific implementation:

public class Entitymemcachedcontroller:controller {////GET:/entitymemcached///<summary >///The serialized entity class is a byte array that is stored in memcached to cache data, thereby easing access pressure ....///</summary>//<returns></ Returns> public ActionResult Index () {var vipinfo = new list<vip>{new V ip{username= "Zhang San", Vip=1, qq= "3123456", mail= "3123456", vipenddate= (DateTime?) DateTime.Now.AddDays (1)}, new vip{username= "John Doe", Vip=1, qq= "4123456", mail= "4123456", vipenddate= (Datetim E?) DateTime.Now.AddDays (2)}, new vip{username= "Harry", Vip=1, qq= "5123456", mail= "5123456", vipenddate= (Datetim E?) DateTime.Now.AddDays (3)}, new vip{username= "Zhao Liu", Vip=1, qq= "6123456", mail= "6123456", vipenddate= (Datetim E?) DateTime.Now.AddDays (4)}, new vip{username= "Liu Qi", Vip=1, qq= "7123456", mail= "7123456", vipenddate= (Datetim E?)                 DateTime.Now.AddDays (5)}};       if (request.cookies["_entitymemcached"] = = null) {string sessionId = Guid.NewGuid ().                ToString (); response.cookies["_entitymemcached"].                Value = sessionId; response.cookies["_entitymemcached"]. Expires = DateTime.Now.AddMinutes (1);//Set Cookie Expiration Time Memcachedhelper.set (SessionId, Vipinfo, DateTime.Now.Ad Dminutes (1));//Set cache expiration Time return Content ("memcached distributed cache Settings succeeded!!!            "); } else {string key = request.cookies["_entitymemcached"].                Value.tostring ();                Object obj = Memcachedhelper.get (key);                list<vip> info = obj as list<vip>;                if (info! = null) {return View (info);        }} and return Content ("bug" if shown); }

See the implementation:

Then exit and re-click "Implement Memcached Cache"

I set the cache within a minute, so within this minute will always be this interface, have to say memcached still good! Next, we study the outputcached + MONOGODB cache strategy.